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Title: Intrinsic electrical transport properties of monolayer silicene and MoS2 from first principles

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1];  [3];  [4];  [1]
  1. North Carolina State Univ., Raleigh, NC (United States).Dept. of Electrical and Computer Engineering
  2. North Carolina State Univ., Raleigh, NC (United States).Dept. of Physics
  3. Texas Southern Univ., Houston, TX (United States). Dept. of Physics
  4. Univ. of North Texas, Denton, TX (United States). Dept. of Physics, and Dept. of Chemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division (CSMD)

The electron-phonon interaction and related transport properties are investigated in monolayer silicene and MoS2 by using a density functional theory calculation combined with a full-band Monte Carlo analysis. In the case of silicene, the results illustrate that the out-of-plane acoustic phonon mode may play the dominant role unlike its close relative, graphene. The small energy of this phonon mode, originating from the weak $sp^2 π$ bonding between Si atoms, contributes to the high scattering rate and significant degradation in electron transport. In MoS2, the longitudinal acoustic phonons show the strongest interaction with electrons. The key factor in this material appears to be the $$Q$$ valleys located between the $$Γ$$ and $$K$$ points in the first Brillouin zone as they introduce additional intervalley scattering. The analysis also reveals the potential impact of extrinsic screening by other carriers and/or adjacent materials. The effective deformation potential constants are extracted for all relevant intrinsic electron-phonon scattering processes in both materials.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1565045
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 87, Issue 11; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 309 works
Citation information provided by
Web of Science

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Realization of Room-Temperature Phonon-Limited Carrier Transport in Monolayer MoS 2 by Dielectric and Carrier Screening journal November 2015
Recent Progress and Future Prospects of 2D-Based Photodetectors journal July 2018
Emerging Applications of Elemental 2D Materials journal October 2019
High Bipolar Conductivity and Robust In-Plane Spontaneous Electric Polarization in Selenene journal November 2018
Enhanced Raman and photoluminescence response in monolayer MoS 2 due to laser healing of defects: Enhanced Raman and photoluminescence response journal July 2017
Graphene/silicon and 2D-MoS2/silicon solar cells: a review journal March 2019
Local Electron Interaction with Point Defects in Sphalerite Zinc Selenide: Calculation from First Principles journal January 2018
Two-dimensional semiconductors with possible high room temperature mobility journal September 2014
Two-Dimensional Transition Metal Dichalcogenides and Their Charge Carrier Mobilities in Field-Effect Transistors journal August 2017
2D transition metal dichalcogenides journal June 2017
Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides journal November 2016
Intervalley scattering by acoustic phonons in two-dimensional MoS2 revealed by double-resonance Raman spectroscopy journal March 2017
Two-dimensional flexible nanoelectronics journal December 2014
Electronics based on two-dimensional materials journal October 2014
Silicene field-effect transistors operating at room temperature journal February 2015
Low Lattice Thermal Conductivity of a Two-Dimensional Phosphorene Oxide journal March 2019
A Revisit to High Thermoelectric Performance of Single-layer MoS2 journal December 2015
Low lattice thermal conductivity of stanene journal February 2016
Bilateral substrate effect on the thermal conductivity of two-dimensional silicon journal January 2015
Wafer-scale growth of MoS 2 thin films by atomic layer deposition journal January 2016
Group 6 transition metal dichalcogenide nanomaterials: synthesis, applications and future perspectives journal January 2018
Two-dimensional transition metal dichalcogenides: interface and defect engineering journal January 2018
Penta-Pt 2 N 4 : an ideal two-dimensional material for nanoelectronics journal January 2018
The origin of intrinsic charge transport for Dirac carbon sheet materials: roles of acetylenic linkage and electron–phonon couplings journal January 2019
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Electron–phonon dynamics in 2D carbon based-hybrids XC (X  =  Si, Ge, Sn) journal February 2019
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Intrinsic electronic transport and thermoelectric power factor in n-type doped monolayer MoS 2 journal April 2018
First-principle high-throughput calculations of carrier effective masses of two-dimensional transition metal dichalcogenides journal July 2018
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Solution‐Processable 2D Materials Applied in Light‐Emitting Diodes and Solar Cells journal January 2020
Accelerated Screening of Thermoelectric Materials by First-Principles Computations of Electron-Phonon Scattering journal April 2018
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Multi-terminal transport measurements of MoS2 using a van der Waals heterostructure device platform journal April 2015
Embedded gate CVD MoS2 microwave FETs journal August 2017
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Simultaneously high electron and hole mobilities in cubic boron-V compounds: BP, BAs, and BSb journal August 2018
Large thermoelectric power factor of high-mobility transition-metal dichalcogenides with 1 T phase journal February 2020
Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides conference February 2017
Observation of chiral phonons journal February 2018
Engineering Epitaxial Silicene on Functional Substrates for Nanotechnology journal September 2019
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k · p theory for two-dimensional transition metal dichalcogenide semiconductors journal April 2015
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